Free tool
Gel set price calculator: rent, product and the hours you fill
Put your weekly rent, your product cost per set and the services you honestly fill into one place and read the price floor off the other side.
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Rebooking interval calculator for nail studios and booth renters
If every client came back when her set was actually done rather than when she remembered, this shows you the appointments and the chair hours that would create.
The gap between how long a set wears and how long a client waits is where most nail income quietly disappears. A gel manicure that holds three weeks on her hands and a client who rebooks at four and a half weeks is not a retention problem you can see on the calendar. It looks like a full book. It is a book with one missing appointment per client per cycle.
This calculator turns that gap into two numbers you can act on: how many appointments a year you are leaving on the table, and whether you actually have the chair hours to take them if you closed it. The second number matters, because closing a rebooking gap you cannot staff just moves the problem to your evenings.
Your result
Appointments a year at today's interval
1,369
What your current rebooking rhythm produces across the whole book.
Appointments a year you are missing
717
The difference between rebooking on wear time and rebooking on memory.
Extra chair hours needed per week
22.4
What those recovered appointments would ask of an average working week.
Chair hours left after absorbing them
7.6
A negative number means you would need a second tech or a higher price instead.
If the last figure goes negative, the honest move is to raise the price on your slowest service rather than add hours you do not have.
Wear time is a per client number, not a studio rule
Three week rebooking is a studio convention, not a fact about nails. The client who types all day and washes her hands twenty times gets a different result from the same builder gel than the client who works at a desk with a keyboard cover. One is genuinely done at day sixteen and the other still looks intentional at day twenty eight.
Sending both the same nudge trains both to ignore it. The one who needed you at sixteen days has already picked at a lifted edge, and the one at twenty eight days feels chased. Logging wear days at removal turns your nudge into something each of them recognizes as accurate, which is the only reason a reminder gets acted on twice.
What to do with the capacity answer
If the calculator says you have spare hours, the work is straightforward: tighten the nudge, book the next appointment before she leaves the chair, and let the interval come down toward real wear time. That is the cheapest revenue in the trade because it comes from clients who already like your work.
If it says you would run out of hours, the gap is telling you something different. Your price is low for the demand you have. Raising the menu on the service with the longest chair time, or moving the slowest clients to a longer wearing structured set, gets you the same income without a fourteen hour Saturday.
Questions about this calculator
How do I find my real average rebooking interval?
Take twenty regular clients and measure the days between their last four appointments. Average them. Almost everyone finds the real number is a week longer than the number they quote at the desk, which is exactly the gap this calculator prices.
Is it realistic to get every client onto wear time?
No, and the calculator is showing you a ceiling rather than a target. Half of the gap is a normal result from booking the next appointment at the chair and a nudge timed to her own set. The rest belongs to clients whose schedules will never cooperate.
Does this work for pedicures too?
Yes, run it separately with pedicure wear days and pedicure chair time. Gel pedicures usually wear far longer than manicures, so the interval gap is smaller but the chair time per appointment is bigger. Mixing them into one average hides both effects.
More free tools and working documents
Working document
The client nail record card every set should be logged on
One page per client that holds what you applied, how you prepped it, how it wore and when she is due back, so the next appointment starts with facts instead of memory.
The inputs belong on the client card
The figure you just read is only as honest as the wear days and product cost you typed above it. In PolishBook both come off the client card, logged at the removal rather than recalled a month later, so the next time you rerun this the numbers are your own. Ask for a demo and we will start with one gel set you finished this week.